Model area incorrectly made solid when sliced

[leftspin2k]

Version

Version of PrusaSlicer used goes here PrusaSlicer-2.2.0-beta+win64

Use About->About PrusaSlicer for release versions

For -dev versions, use git describe --tag or get the hash value for the version you downloaded or git rev-parse HEAD

Operating system type + version

What OS are you using, and state any version #s In case of 3D rendering issues, please attach the content of menu Help -> System Info dialog

Windows 10, 64 bit

3D printer brand / version + firmware version (if known)

What 3D printer brand / version are you printing on, is it a stock model or did you modify the printer, what firmware is running on your printer, version of the firmware #s

Prusa MK3, stock

Behavior

• Describe the problem
• Steps needed to reproduce the problem
  • If this is a command-line slicing issue, include the options used
• Expected Results
• Actual Results
  • Screenshots from PrusaSlicer preview are preferred

Slice the models. The wider model with 4 pips has a gap section sliced as a solid area. The thinner model with 2 pips does not.

This works properly in Slic3rPE-1.42.0-veta-win64-full-0201903171406

SB_Roof_Slicing_Bug.zip

Is this a new feature request?

no

Project File (.3MF) where problem occurs

Upload a PrusaSlicer Project File (.3MF) (Plater -> Export plate as 3MF for Slic3r PE 1.41.2 and older, File -> Save / Save Project for PrusaSlicer, Slic3r PE 1.42.0-alpha and newer) Images (PNG, GIF, JPEG), PDFs or text files could be drag & dropped to the issue directly, while all other files need to be zipped first (.zip, .gz)

[leftspin2k]

Also failed in this version

[leftspin2k]

works in this version